My advice would be to get the Silverpuppy. I tried using some CS that I bought but I didn't see progress until I made my own. Don't know why.
As for the staph, I would combine the CS (90%) with DMSO (10%) and swab it on with a Q-tip. I used this combination on my son's eight plantar's warts on the bottom of his feet and within a week, they were all gone. The DMSO will pull the CS into the infection.